If you type ant and press enter, does it show file not found, or does ant run?
If it shows file not found, you haven't setup the paths to the tools / sdk folder.
Reread the instructions on that step in the Android SDK install.

i'm sorry to you, to add more comments , to be honest i got crazy cuz of this issue , i'm sure ant is installed , but i still see the same error again and again , see the attached image please Untitled.jpg

@webdev13, no apologies necessary. Bundle up your project and post it. I'll take a look and even do a screencast with it if necessary so you can see everything I've tried. We'll get it straightened out.

thanks Brice ,
its very kind of you , kindly find the project at http://leads-map.com/myApp1.zip
but there is nothing special in the project , i was only testing your great utility , so i followed all your instructions .

unable to use phonegap api

Dear Brice,
first of all thank you for you great job!
I've a bit of experience in phonegap ios/andoird development but I'm totally new to ST; I succeded using your Sencha Cordova Builder, the app shows the correct version of phonegap, but now I don't know how to call the Phonegap API ! This seems to be a very silly question, but I tried anything which camed to my mind. I'm using ST2.1.1 , Phonegap 2.3.0, Windows7 64bit.
Let's do something really basic, like calling navigator.app.loadURL('http://www.google.com') : how can I do this inside my ST app ? I tried with a segmentedbutton, just because the test app had one already created and it was easy to modify it: